<nav class="navbar navbar-default" style="margin-bottom: 0px;" role="navigation">
   <div class="container-fluid">
      <!-- Brand and toggle get grouped for better mobile display -->
      <div class="navbar-header">
         <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
         </button>
         <a class="navbar-brand" href="index.php">Web Refactoring HTML</a>
      </div>

      <!-- Collect the nav links, forms, and other content for toggling -->
      <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
         <ul class="nav navbar-nav">
            <li><a href="index.php?s=sobreProjeto">Projeto</a></li>
            <li><a href="index.php?s=catalogo">Catálogo</a></li>
         </ul>

         <ul class="nav navbar-nav navbar-right">
            <li class="dropdown">
               <a href="#" class="dropdown-toggle" data-toggle="dropdown">Colaboradores <b class="caret"></b></a>
               <ul class="dropdown-menu">
                  <li role="presentation" class="dropdown-header">Autor HTML</li>
                  <li><a href="http://www-usr.inf.ufsm.br/~fcampagnolo/">Fernando Q. Campagnolo</a></li>
                  <li role="presentation" class="dropdown-header">Autor CSS</li>
                  <li><a href="http://www-usr.inf.ufsm.br/~aputhin/">Arthur R. Puthin</a></li>
                  <li role="presentation" class="dropdown-header">Professor Orientador</li>
                  <li><a href="http://sites.inf.ufsm.br/piveta/">Eduardo K. Piveta</a></li>
                  <li role="presentation" class="dropdown-header">Colaboradores</li>
                  <li><a href="http://www-usr.inf.ufsm.br/~bprates/">Bernardo P. Prates</a></li>
                  <li><a href="http://www-usr.inf.ufsm.br/~tsenger/">Tobias Senger</a></li>
               </ul>
            </li>
         </ul>
      </div><!-- /.navbar-collapse -->
   </div><!-- /.container-fluid -->
</nav>
